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Publication numberUS3051483 A
Publication typeGrant
Publication dateAug 28, 1962
Filing dateJan 7, 1960
Priority dateAug 2, 1955
Also published asUS2979332, US3072403
Publication numberUS 3051483 A, US 3051483A, US-A-3051483, US3051483 A, US3051483A
InventorsKenneth C Sherman
Original AssigneeSherman Entpr Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Mechanism for elevating and separately discharging bowling balls and pins
US 3051483 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

28, 1962 K. c. SHERMAN 3,051,483

MECHANISM FOR ELEVATING AND SEPARATELY DISCHARGING BOWLING BALLs AND PINS Original Filed Aug. 2, 1955 2 Sheets-Sheet 1 FIG-3 5 INVEN TOR KENNETH C. SHERMAN ATTORNEYS Aug. 28,

Original Filed Aug.

K. C. SHERMAN MECHANISM FOR ELEVATING AND SEPARATELY DISCHARGING BOWLING BALLS AND PINS 2 Sheets-Sheet 2' FIG-2 an IIIIIIIIIIIIH INVENTOR KENNETH C.SHERMAN ATTORNEYS United States Patent Ofifice 3,051,483 Patented Aug. 28, 1962 3,051,483 MECHANISM FOR ELEVATING AND SEPARATE- LY DISCHARGING BOWLING BALLS AND PINS Kenneth C. Sherman, Glen Burnie, Md., assignor to Sherman Enterprises, Inc., Worcester, Mass., a corporation of Massachusetts Original application Aug. 2, 1955, Ser. No. 526,033, new Patent No. 2,920,891, dated Jan. 12, 1960. Divided and this application Jan. 7, 1960, Ser. No. 975

2 Claims. (Cl. 27343) This application is a division of my copending application Serial No. 526,033, filed August 2, 1955, for Bowling Pin Setting Machine, now Patent No. 2,920,891. The invention relates to an elevator adapted to pick up balls or pins, one at a time, delivered to its foot and to deliver the balls to a ball return and the pins to conveyor or other device by which they are arranged to deposit in proper formation on an alley. For a more complete understanding of the invention reference may be had to the following description thereof, and to the drawings of which FIGURE 1 is a rear elevational view of the upper portion of an elevator embodying the invention;

FIGURE 2 is a side elevation of the same;

FIGURE 3 is a section on the line 3-3 of FIGURE 2;

FIGURE 4 is a section on the line 4-4 of FIGURE 1, on a larger scale; and

FIGURE 5 is a section on the line 55 of FIGURE 1, on a larger scale.

The elevator with its associated mechanism is mounted at the rear end of the alley pit on the main frame of the pin setting machine of which it is a part. When the machine is in operation, the elevator is driven by an electric motor (not shown) to which it is connected by a chain 39. The chain drives a sprocket-Wheel on a shaft 40 at the top of the elevator.

Mounted on the shaft 40 are two sprocket wheels (not shown) over which pass two elevator chains 42. Two other elevator chains 43 pass over sprocket wheels 44 on a shaft 45 at the top of the elevator. The shaft 40 carries a spur gear 46 which drives another spur gear 47 of twice the diameter on a shaft 48. On the other end of this shaft is a sprocket wheel 49. A chain 50 passes over the sprocket Wheel 49 and drives a sprocket wheel 51 half the size of the wheel 49 mounted on the shaft 45. This ensures the two sets of elevator chains operating in unison. Each pair of chains 42 and 43 carry a series of spaced lift bars 52. These lift bars operate in pairs, a bar on the chains 42 being opposite a corresponding bar on the other chains 43 during their upward movements. The top surface 53 of each lift bar 52 when it is ascending is slightly inclined from the ends to a low point at its middle (FIGURE 2) so as to center the ball or pin elevated thereby. .The central portion of each bar 52 has a projecting lip 52 the face of which is inclined to receive and support the body of a bowling pin. The end portions of each bar are vertically grooved to run on vertical rails 54 so as to maintain the lift bars of each pair in accurate spaced relation.

The spacing between the lift bars of each pair is such that each pin elevated thereby assumes an upside down position regardless of whether the head or butt of the pin reaches the elevator first.

When the balls and pins in the pit are carried rearward to the foot of the elevator, they are lifted in succession by pairs of lift bars 52 until they reach a ball kick-off device or a pin kick-off device, the latter being higher up. As the ball is being lifted by a pair of bars 52, it rocks a pair of opposed fingers 55, each of which is mounted on a rock shaft 56 which extends through rail members 54 and has a crank end 57. The two crank ends 57 normally engage a latch 58 which is pivoted to the lower end of a kick-off lever 60 which has a yokeshaped upper end and a channeled lower portion. This lever rocks loosely on a shaft 61 (FIGURE 4). Fixed on the shaft 61 between the arms of the yoke are a dog 62 and an arm 63, the latter having an offset end portion with a cam edge 64. A pin 65 on a slide bar 66 in the channeled portion of the lever 60 rides on the cam edge 64 as the arm 63 is rocked counterclockwise from the position shown in FIGURE 4. As the pin 65 rides to the low part of the cam 64, the bar 66 slides downward so that the upper end of the slide bar moves out of the path of the dog 62. When the crank ends 57 are moved clear of the latch 58 by a ball which is being lifted by the elevator, the latch is rocked by a spring 67 so that its nose 68 moves into the path of a shoulder 69 on the slide bar 66 so that the latter cannot move downward when the arm 63 rocks with the shaft 61. The upper end of the slide bar 66 is thus kept in the path of the dog 62 which thereupon rocks the kick-off lever 60 against the restoring force of a spring 69a, and ejects the ball from the elevator onto a ball return 70. The shaft 61 is rocked by a spur gear 71 thereon which meshes with a rack 72 oscillated by a bell crank 73 pivoted at 74 and connected by a rod 75 to a crank-pin 76 on the gear wheel 47. The latter turns once for every two revolutions of the gear wheel 46 and the shaft 40'. Since two revolutions of the shaft 40 are required to advance the elevator chains a distance equal to the spacing between successive lift bars, the kick-off lever opera-ting mechanism makes a working stroke every time a pair of lift bars pass the fingers 55. If a ball is on these lift bars, the kick-off lever rocks to eject it as hereinbefore described. A pin on the lift bars is not wide enough to touch the fingers 5'5 and therefore continues to travel upward to a pin ejecting mechanism.

The pin ejecting mechanism is a loosely hung lever 77 which is rocked by a finger 78 secured to a rock shaft 79. This shaft is rocked by the rack 72 which meshes with a pinion 80 on the shaft 79. The rack 72 is held in mesh with the pinions 71 and 80 by guide rolls '82.

The mechanisms for actuating the levers for ejecting the balls and pins from the elevator are driven from the same source of power and are carefully timed so that they operate only when lift bars of the elevator reach positions in which a ball or pin thereon is in the proper position to be struck by the appropriate lever.

I claim:

1. In combination, a bowling alley having a pit at its far end, an elevator arranged to receive balls and pins in said pit, said elevator comprising endless chains having opposed vertical reaches and pairs of opposed lift bars spaced at intervals along the chains and cooperating to elevate single balls or pins, a ball return adjacent to said elevator, means for selectively ejecting balls from the elevator to the ball return and allowing pins to be elevated further, and means at a higher level than the ball ejector for ejecting pins from said elevator, said ball-ejecting means including a rock shaft constantly rocking in timed relation to the upward travel of said lift bars, an arm loosely depending from said shaft and swingable between the reaches of the elevator chains toward said ball reutrn, and means responsive to contact by a ball being lifted by said elevator to operatively connect said arm to said rock shaft for a ball-ejecting stroke.

2. In combination, a bowling alley having a pit at its far end, an elevator arranged to receive balls and pins in said pit, said elevator comprising endless chains having opposed vertical reaches and pairs of opposed lift bars spaced at intervals along the chains and cooperating to elevate single balls or pins, a ball return adjacent to said lever depending from said shaft and loosely rockable.

thereon, a slide bar carried by said lever along a side thereof and longitudinally slidable thereon from an upper position tota lower position relative to said lever, a pin on said slide bar near the upper end thereof, a dog and an arm fixed on said shaft to rock therewith, said dog being arranged to engage said bar when the bar is in its upper position so as to rock said bar and lever to eject a ball from said elevator, said arm having a cam edge engaged by said pin and shaped to release said bar to its lower position out of the path of said dog when said arm rocks, a latch pivoted to the lower end portion of said lever and rockable to engage said slide bar to hold it in its upper position, a spring normally biasing said latch towards said slide bar, and means engageable by a bowling ball on said elevator to release said latch for movement into bar-engaging position whereby said bar is held in its upper position during the next rocking movement of the dog and arm and the lever is rocked by 10 said dog to eject the ball from the elevator.

References Cited in the file of this patent UNITED STATES PATENTS 1,668,665 White May 8, 1928 Parra et a1. Feb. 8, 1944 Troiano Sept. 1, 1959

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1668665 *Dec 14, 1926May 8, 1928Edward A WhiteSizing apparatus
US2341476 *Sep 5, 1942Feb 8, 1944Parra JosephPit discharging apparatus for automatic bowling alleys
US2902282 *Jun 20, 1957Sep 1, 1959Troiano PatElevators for bowling pin setting machines
Classifications
U.S. Classification473/98
International ClassificationA63D5/02, A63D5/08
Cooperative ClassificationA63D5/08, A63D5/02
European ClassificationA63D5/08